<template>
  <div v-if="isVisible" class="fixed top-4 left-1/2 transform -translate-x-1/2 z-50">
    <div :class="[
      'px-6 py-4 rounded-lg shadow-lg text-white max-w-sm transition-all duration-300',
      type === 'success' ? 'bg-green-500' : 
      type === 'error' ? 'bg-red-500' : 
      type === 'warning' ? 'bg-yellow-500' : 'bg-blue-500'
    ]">
      <div class="flex items-center">
        <div class="flex-shrink-0">
          <svg v-if="type === 'success'" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20">
            <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd" />
          </svg>
          <svg v-else-if="type === 'error'" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20">
            <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd" />
          </svg>
          <svg v-else-if="type === 'warning'" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20">
            <path fill-rule="evenodd" d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z" clip-rule="evenodd" />
          </svg>
          <svg v-else class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20">
            <path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd" />
          </svg>
        </div>
        <div class="ml-3">
          <p class="text-base font-medium">{{ message }}</p>
        </div>
        <div class="ml-auto pl-3">
          <button @click="hide" class="inline-flex text-white focus:outline-none focus:text-white">
            <svg class="w-4 h-4" fill="currentColor" viewBox="0 0 20 20">
              <path fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd" />
            </svg>
          </button>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup>
import { ref } from 'vue'

const isVisible = ref(false)
const message = ref('')
const type = ref('info')
let timeout = null

const show = (msg, toastType = 'info', duration = 3000) => {
  message.value = msg
  type.value = toastType
  isVisible.value = true
  
  if (timeout) {
    clearTimeout(timeout)
  }
  
  timeout = setTimeout(() => {
    hide()
  }, duration)
}

const hide = () => {
  isVisible.value = false
  if (timeout) {
    clearTimeout(timeout)
    timeout = null
  }
}

// 暴露方法给父组件
defineExpose({
  show,
  hide
})
</script> 